Synthesis of some 3,4-dihydro-2H-benzo[f]pyrano[2,3-h]chromen-6-one derivatives
- 20 May 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 12,p. 1455-1460
- https://doi.org/10.1039/b202640f
Abstract
Reactions of o-quinones 16–18 with ylide 19 afforded compounds 5–7 in moderate to good yields (62–80%), which were further de-ethoxycarbonylated to compounds 28–30 in 53–66% yield. Compounds 6, 7 and 29 were further transformed into compounds 31–35. The preparation of the novel compounds 10, 11, 16 and 27 is also reported.Keywords
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